<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>层叠性</title>
<style type="text/css">
p{font-size:12px;
  font-family:"楷体";}
  .special{font-size:16px;}
  #one{color:red;}

</style>
</head>

<body>
<p class="special" id="one">段落文本</p>
<p>段落文本2</p>
<p>段落文本3</p>
</body>
</html>
